Author	[Modern View]
Joshua Rod 11-05-2012 10:19:34 66.188.152.130 Report to Moderator	I've had a small oil leak under the tractor for years. Last Feb. put new gaskets on the oil pump assembly (since it was apart) and replaced the oil pan gasket. Still leaks. Now I have to believe it is the rear main seal. I have worked on many engines over the years and never had any issues with this type of repair. However, everything i have done with seals like this were when the motor was upside down on a stand. Can i do this with the motor still in place or is it near impossible? Is it hard to get the bearing and cap back in place? I know someone out there has tried this... [Reply]   [No Email]
charlieu 11-05-2012 19:28:20 209.131.227.57 Report to Moderator	Re: C-123 C motor rear main seal. in reply to Joshua Rod, 11-05-2012 10:19:34   Here is a picture of a splitting stand that I designed to split a Farmall A, B and C series tractor. The stand is shown on a BN. Once the flywheel is removed the seal retainer can be removed. Two pieces of felt are used to seal around the crankshaft. Make sure to check the holder for warping, they have the tendency to warp badly. My local machine shop is able to flaten them so they can be reused. Good luck. [Reply]  [No Email]
pete 23 11-05-2012 18:27:58 74.32.238.2 Report to Moderator	Re: C-123 C motor rear main seal. in reply to Joshua Rod, 11-05-2012 10:19:34   Rear seal is in behind flywheel in a pot metal two piece retainer. Seal is two piece felt. Also, there is a pot metal plate under the retainer. Both warp out of shape seriously. You can service both with a split at clutch housing and pan removed. [Reply]  [No Email]
pete 23 11-05-2012 18:27:58 74.32.238.2 Report to Moderator	Re: C-123 C motor rear main seal. in reply to Joshua Rod, 11-05-2012 10:19:34   Rear seal is in behind flywheel in a pot metal two piece retainer. Seal is two piece felt. Also, there is a pot metal plate under the retainer. Both warp out of shape seriously. You can service both with a split at clutch housing and pan removed. [Reply]  [No Email]
Joshua Rod 11-05-2012 12:35:08 66.188.152.130 Report to Moderator	Re: C-123 C motor rear main seal. in reply to Joshua Rod, 11-05-2012 10:19:34   Thanks guys, I knew someone's been through this. Best to know this now before i get stuck and it requires a complete teardown. (I have a tendancy to bite off more than i can chew) [Reply]  [No Email]
BARRY HOWARD 11-05-2012 12:13:29 12.45.50.5 Report to Moderator	Re: C-123 C motor rear main seal. in reply to Joshua Rod, 11-05-2012 10:19:34   I thought my seal was leaking, turned out my oil pan had a small hole near the bellhousing end. Check that 1st. Barry [Reply]  [No Email]
CharlieNJ 11-05-2012 12:01:14 76.117.68.151 Report to Moderator	Re: C-123 C motor rear main seal. in reply to Joshua Rod, 11-05-2012 10:19:34   Joshua, you need the flywheel off the crankshaft to service that rear main. So you do it on the engine stand or the bench. Regards, Charlie [Reply]  [No Email]